Final answer:
To convert 150% to a decimal, divide by 100 to get 1.50. As a fraction, 150% is written as 150/100, which simplifies to 3/2 or 1½.
Step-by-step explanation:
To answer the student's question, let's choose 150% as an example. To convert 150% to a decimal, you divide 150 by 100, getting 1.50. To express 150% as a fraction, you write the percent value as a fraction with a denominator of 100, which is 150/100, and then you simplify it if possible. In this case, 150/100 simplifies to 3/2 or 1½.
Converting percents between different forms is a fundamental skill in mathematics. When the percentage is greater than 100%, it indicates a value larger than the whole. So, a percent like 150% means the amount is one and a half times of the total or whole.